Quick, what's the second most traded commodity in the world, after oil? Sorry, no: it's not coffee. In fact, while hard data is scant, it may well be -- of all things -- carbon. No, really. According to the World Bank (PDF) , the global carbon market was worth a whopping 1.42 Facebooks US$142 billion in 2010. Mind you, it's not like container...

As usual, KQED does a bang-up job reporting on California and its climate change actions. Here, take a look at California's largest polluters. Although the data is a couple years old, don't you think these entities are probably the same today?

With the Clean Development Mechanism's murky future in the balance, project developers are rushing to register projects at a high rate. Do you think these projects are actively helping the fight against climate change?

What's going on with the EU ETS? Shouldn't prices be rising as we enter Phase III? eCO2market's Marius Frunza examines that question and sheds some light on what to expect with CER/EUA prices as we begin 2012.